Analysis

  • max time kernel
    51s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    13-04-2023 12:02

General

  • Target

    z0Transferslip.exe

  • Size

    692KB

  • MD5

    523420934008337bc65cd0ee6a40adbf

  • SHA1

    6e21b99481d21aab127e702a7b6a4582255ed18e

  • SHA256

    8bdb93748c95f7288c8e062db2c2ebff27e89c6e0f031f1c527016d5140f37b2

  • SHA512

    098fdae6e0265663ff49b30f3685a509bd997207bb818f6d4f837b4ec7a6e02c65d7286500e8ecdde9bf0fa167e4b3be6ff1173bdc479c49fff1af6cc2f19264

  • SSDEEP

    12288:ntwI0pW48+hNknKT7GJejOtysczjLdhys//HzrgML3OEfKvajdC8Qi5fliadEIP1:9617GJrYvXLdhys3TrgMrOEff5C8Qi5L

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6192832133:AAF7C5Hu2cAny_oozlOAGw_7DWfvYVumEbE/

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\z0Transferslip.exe
    "C:\Users\Admin\AppData\Local\Temp\z0Transferslip.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XizZqQpvSyj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpABEA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1868
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
        PID:1968
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1708

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpABEA.tmp

      Filesize

      1KB

      MD5

      d8c808d118ea4534733aa068cad9a7a7

      SHA1

      75c10802736125e9e0a49c0a3390b9d5b9098064

      SHA256

      c7af0eb13c0ad678a70e9590c83de8be386fb528b6bc67cb600f36cbb085f2b2

      SHA512

      764cdcad509eca6433432b96b5b78cdbaf64ab32ee5ef9224953c244ae916549999be859d91292e89209acc809c14aa4a848bfd1f1a1e11fee59e08f1c192b9c

    • memory/1708-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1708-63-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-75-0x0000000004420000-0x0000000004460000-memory.dmp

      Filesize

      256KB

    • memory/1708-73-0x0000000004420000-0x0000000004460000-memory.dmp

      Filesize

      256KB

    • memory/1708-66-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-70-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-72-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-64-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-68-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1708-65-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2016-59-0x0000000000540000-0x0000000000570000-memory.dmp

      Filesize

      192KB

    • memory/2016-54-0x00000000000E0000-0x0000000000192000-memory.dmp

      Filesize

      712KB

    • memory/2016-56-0x00000000003A0000-0x00000000003AC000-memory.dmp

      Filesize

      48KB

    • memory/2016-55-0x0000000000570000-0x00000000005B0000-memory.dmp

      Filesize

      256KB

    • memory/2016-58-0x0000000004D50000-0x0000000004DCE000-memory.dmp

      Filesize

      504KB

    • memory/2016-57-0x0000000000570000-0x00000000005B0000-memory.dmp

      Filesize

      256KB